Lecture 3, Ch. 7

Lecture 3, Ch. 7 - Lecture #3 Date _ s Chapter 7~ A Tour of...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture #3 Date _________ Chapter 7~ A Tour of the Cell
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Cytology: science/study of cells Light microscopy •resolving power~ measure of clarity Electron microscopy •TEM~ electron beam to study cell ultrastructure •SEM~ electron beam to study cell surfaces Cell fractionation~ cell separation; organelle study Ultracentrifuges~ cell fractionation; 130,000 rpm
Background image of page 2
Cell Types: Prokaryotic Nucleoid: DNA concentration No organelles with membranes Ribosomes: protein synthesis Plasma membrane (all cells); semi-permeable Cytoplasm/cytosol (all cells)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Cell size As cell size increases, the surface area to volume ratio decreases Rates of chemical exchange may then be inadequate for cell size Cell size, therefore, remains small
Background image of page 4
Nucleus Genetic material. .. •chromatin •chromosomes nucleolus : rRNA; ribosome synthesis Double membrane envelope with pores Protein synthesis (mRNA)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Ribosomes Protein manufacture Free •cytosol; •protein function in cell Bound •endoplasmic reticulum; •membranes, organelles, and export
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

Lecture 3, Ch. 7 - Lecture #3 Date _ s Chapter 7~ A Tour of...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online